Glasgow's Low Emission Zone is being introduced on a phased basis:
Grant Funding Availability
The Scottish Government committed, through the 2018 Programme for Government, to help those who will have most difficulty preparing for the introduction of low emission zones in the four cities of Glasgow, Edinburgh, Dundee and Aberdeen.
Full details of all current Scottish Government grant funding availability (and to register for future rounds where appropriate) can be found on the national LEZs website.
Other, related grants and loans funded by Transport Scotland and managed by the Energy Saving Trust (EST), can be found on the EST website.